What useful life is
Useful life is the period over which a fixed asset is expected to be usable to the business. It is an estimate of how long an asset such as a pump, a vehicle or a piece of equipment will provide value before it is worn out, obsolete or retired.
Useful life is the basis for depreciation. Rather than charging the full cost of an asset to one period, its cost is spread across the years it is expected to be used. A longer useful life spreads the cost over more periods, so the depreciation charge in each period is smaller, while a shorter useful life concentrates the cost into fewer periods.
Useful life is an estimate, so it is reviewed over time and can be revised if an asset turns out to last longer or shorter than expected. The judgement should reflect the asset and how it is used, within the relevant accounting standards.
Useful life in the Cohiva platform
Cohiva Control posts fixed-asset depreciation across an asset's useful life. Each asset in the register carries the information needed to spread its cost over the period it is expected to serve, and the resulting depreciation is posted to the ledger. As an asset depreciates, its net book value falls, which Control tracks so the register and the accounts stay aligned.